package OOday01;

public class ConsDemo {
    public static void main(String[] args) {
        Student ly=new Student();
        ly.name="李洋";
        ly.age=23;
        ly.className="jsd2407";
        ly.stuId="001";
        ly.sayHi();

        Student lj=new Student("刘界",21,"jsd2407","002");
        lj.sayHi();
        Student ll=new Student("李玲",25,"jsd2407","003");
        ll.sayHi();
        Student yy=new Student();
        yy.sayHi();

    }
}
